The 34-year-old actress shared the post on Twitter.
"Happiest birthday Russell Tovey may you always keep smiling."
The "Bajirao Mastani" star plays an CIA agent in the second season of the ABC show, while Tovey was cast in the thriller drama for the series regular role of Harry Doyle.
Priyanka is also gearing up for her Hollywood debut "Baywatch", where she will be seen sharing screen space with actors Dwayne Johnson and Zac Efron.
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